Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 285/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 34.07 (865.5) | -0.67 (-16.9) -1.9% |
| Width inches (mm) | 11.02 (280) | 11.22 (285) | 0.2 (5) 1.8% |
| Circum. inches (mm) | 109.14 (2772.14) | 107.05 (2719.05) | -2.09 (-53.09) -1.9% |
| Sidewall Height inches (mm) | 9.37 (238) | 9.54 (242.25) | 0.17 (4.25) 1.8% |
| Revolutions per mile (km) | 580.54 (360.73) | 591.88 (367.78) | 11.34 (7.04) 2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.62 mph (31.57 km/h) |
| 25 mph (40.23 km/h) | 24.52 mph (39.46 km/h) |
| 30 mph (48.28 km/h) | 29.43 mph (47.36 km/h) |
| 35 mph (56.33 km/h) | 34.33 mph (55.25 km/h) |
| 40 mph (64.37 km/h) | 39.23 mph (63.14 km/h) |
| 45 mph (72.42 km/h) | 44.14 mph (71.03 km/h) |
| 50 mph (80.47 km/h) | 49.04 mph (78.93 km/h) |
| 55 mph (88.51 km/h) | 53.95 mph (86.82 km/h) |
| 60 mph (96.56 km/h) | 58.85 mph (94.71 km/h) |
| 65 mph (104.61 km/h) | 63.76 mph (102.6 km/h) |
| 70 mph (112.65 km/h) | 68.66 mph (110.5 km/h) |
| 75 mph (120.7 km/h) | 73.56 mph (118.39 km/h) |
| 80 mph (128.75 km/h) | 78.47 mph (126.28 km/h) |
| 85 mph (136.79 km/h) | 83.37 mph (134.17 km/h) |
| 90 mph (144.84 km/h) | 88.28 mph (142.07 km/h) |
| 95 mph (152.89 km/h) | 93.18 mph (149.96 km/h) |
| 100 mph (160.93 km/h) | 98.08 mph (157.85 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1506 | 1750 | 1884 | 1968 | 2057 | 2122 | 2192 | 2275 | 2391 | 2506 | 2634 | 2737 | 2923 | 3128 | 3288 | 3391 | 3448 | 3660 | 3955 | 4596 |
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